X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Ftexture.cpp;h=a65715e716a26c6fbc283655c37c0382fc795010;hp=54577aacd55e06f389361f0eda96305b42a63057;hb=HEAD;hpb=be92396630a2065e43c21d9d1904e97014844cff

diff --git a/source/core/texture.cpp b/source/core/texture.cpp
index 54577aac..a65715e7 100644
--- a/source/core/texture.cpp
+++ b/source/core/texture.cpp
@@ -1,3 +1,4 @@
+#include <msp/datafile/rawdata.h>
 #include <msp/io/memory.h>
 #include "error.h"
 #include "resourcemanager.h"
@@ -14,39 +15,14 @@ namespace Msp {
 namespace GL {
 
 Texture::Texture(unsigned t):
-	TextureBackend(t),
-	format(NO_PIXELFORMAT),
-	storage_fmt(format),
-	swizzle(NO_SWIZZLE),
-	use_srgb_format(false),
-	auto_gen_mipmap(false)
+	TextureBackend(t)
 { }
 
 void Texture::set_format(PixelFormat fmt)
 {
 	PixelComponents comp = get_components(fmt);
-	PixelComponents st_comp = comp;
-	FormatSwizzle swiz = NO_SWIZZLE;
-	switch(comp)
-	{
-	case LUMINANCE:
-		st_comp = RED;
-		swiz = R_TO_LUMINANCE;
-		break;
-	case LUMINANCE_ALPHA:
-		st_comp = RG;
-		swiz = RG_TO_LUMINANCE_ALPHA;
-		break;
-	case BGR:
-		st_comp = RGB;
-		swiz = RGB_TO_BGR;
-		break;
-	case BGRA:
-		st_comp = RGBA;
-		swiz = RGB_TO_BGR;
-		break;
-	default:;
-	}
+	ComponentSwizzle swiz = get_required_swizzle(comp);
+	PixelComponents st_comp = unswizzle_components(comp, swiz);
 
 	PixelFormat st_fmt = make_pixelformat(st_comp, get_component_type(fmt), is_srgb(fmt));
 	require_pixelformat(st_fmt);
@@ -58,6 +34,48 @@ void Texture::set_format(PixelFormat fmt)
 	swizzle = swiz;
 }
 
+unsigned Texture::count_levels(unsigned size)
+{
+	unsigned n = 0;
+	for(; size; size>>=1, ++n) ;
+	return n;
+}
+
+void Texture::stage_pixels(void *staging, const void *data, size_t count)
+{
+	if(swizzle==RGBA_TO_RGB)
+	{
+		const uint32_t *src = static_cast<const uint32_t *>(data);
+		uint32_t *dst = static_cast<uint32_t *>(staging);
+		size_t i = 0;
+		for(; i+3<count; i+=4)
+		{
+			dst[0] = src[0]|0xFF000000;
+			dst[1] = (src[0]>>24)|(src[1]<<8)|0xFF000000;
+			dst[2] = (src[1]>>16)|(src[2]<<16)|0xFF000000;
+			dst[3] = (src[2]>>8)|0xFF000000;
+			src += 3;
+			dst += 4;
+		}
+
+		if(i<count)
+		{
+			const uint8_t *src_bytes = reinterpret_cast<const uint8_t *>(src);
+			for(; i<count; ++i)
+			{
+				*dst++ = src_bytes[0]|(src_bytes[1]<<8)|(src_bytes[2]<<16)|0xFF000000;
+				src_bytes += 3;
+			}
+		}
+	}
+	else
+	{
+		const char *src = static_cast<const char *>(data);
+		size_t data_size = count*get_pixel_size(storage_fmt);
+		copy(src, src+data_size, static_cast<char *>(staging));
+	}
+}
+
 void Texture::load_image(const string &fn, unsigned lv)
 {
 	Graphics::Image img;
@@ -87,11 +105,13 @@ Texture::Loader::Loader(Texture &t, Collection *c):
 	CollectionObjectLoader<Texture>(t, c),
 	levels(0)
 {
-	add("external_image", &Loader::external_image);
-	add("external_image_srgb", &Loader::external_image_srgb);
+	add("external_data", &Loader::external_data);
+	add("external_image", &Loader::external_image, false);
+	add("external_image_srgb", &Loader::external_image, true);
 	add("generate_mipmap", &Loader::generate_mipmap);
 	add("image_data", &Loader::image_data);
 	add("mipmap_levels", &Loader::mipmap_levels);
+	add("raw_data", &Loader::raw_data);
 }
 
 void Texture::Loader::finish()
@@ -108,20 +128,22 @@ void Texture::Loader::load_external_image(Graphics::Image &img, const string &fn
 	img.load_io(*io);
 }
 
-void Texture::Loader::external_image(const string &fn)
+void Texture::Loader::external_data(const string &fn)
 {
-	obj.use_srgb_format = false;
-	external_image_common(fn);
-}
-
-void Texture::Loader::external_image_srgb(const string &fn)
-{
-	obj.use_srgb_format = true;
-	external_image_common(fn);
+	if(obj.manager)
+		obj.manager->set_resource_location(obj, get_collection(), fn);
+	else
+	{
+		DataFile::RawData rd;
+		rd.open_file(get_collection(), fn);
+		rd.load();
+		obj.image(0, rd.get_data());
+	}
 }
 
-void Texture::Loader::external_image_common(const string &fn)
+void Texture::Loader::external_image(bool srgb, const string &fn)
 {
+	obj.use_srgb_format = srgb;
 	if(obj.manager)
 		obj.manager->set_resource_location(obj, get_collection(), fn);
 	else
@@ -154,5 +176,13 @@ void Texture::Loader::mipmap_levels(unsigned l)
 	levels = l;
 }
 
+void Texture::Loader::raw_data(const string &data)
+{
+	if(obj.manager)
+		obj.set_manager(0);
+
+	obj.image(0, data.data());
+}
+
 } // namespace GL
 } // namespace Msp